Arduino 9v Battery Holder with ON/OFF Switch 9 volt Box Pack Power Toggle Description These are handy battery cases for 9 Volt Batteries. They allow you to shut off power to your project or Arduino without having to pull the barrel plug out each time. They have an easy to remove sliding cover with a hole for a screw to lock the cover down. Listing is for 1 battery holder. Features: ...Arduino 9v Battery Holder with ON/OFF Switch 9 volt Box Pack Power Toggle Descr...